Fire

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This article is about fire produced by weapons. For environmental fire, see this article.
I appear to have burst into flames.
The Spy on the blatantly obvious

Fire, or flames, refers to the special projectiles produced by the primary weapons of Pyro. It can cause the damage-over-time effect inflicted on a player, which is called afterburn.

Fire has its own damage type, and some other weapons which are not the primary weapons of Pyro can also cause fire damage and afterburn.

Flames produced by the primary weapons of Pyro

The Pyro has two different primary weapon types: the conventional Flame Throwers and the Flame Launcher. Although they all visually produce a stream of flames, the mechanics behind the visuals are different.

Conventional Flame Throwers

The stock Flame Thrower and its variants share the same flame mechanic. Upon pressing primary fire key, it produces multiple little invisible projectile-like boxes, which can be called flame particles. When one of these particles makes contact with an enemy player's hitbox, a straight line is drawn from the point of firing to the center of the particle which made contact. if there are no environment elements in between the two points, the hit is registered by the system and damage is applied. Unlike normal projectiles, flame particles do not stop when they collide with players or buildings, but instead continue moving and dealing damage to other objects until their maximum lifespan is reached. The particles have their damage largely determined by time since being fired rather than distance. One flamethrower ammo fires two flame particles.

The flame particles do not have visible models, so the flame visual effect is not the real indicator of how the particles really move. As such, the flame particles and the visual effect have no direct connections. When the sv_cheats and tf_debug_flamethrower commands are set to 1, the boxes of visual effect as well as the boxes of flame particles can be seen by the flamethrower user. The boxes will inherently rise upwards over time, and each box has a random speed, spread and a lifetime. Additionally, forward velocity for each box decreases over time. These factors are combined together to form a distance-limited, cone-shaped flame stream. Due to the lack of direct connection between the flame particles and the visual effect, when only the visual effect hits the target while the flame particles do not hit, the target of the flame stream will not receive any damage.

The momentum of the boxes is partially determined by the firing Pyro's movement. When a player is moving, the velocity of the player at the time of firing a particle is added to that particle's inherent movement in the player's moving direction. Therefore, moving forward increases forward particle velocity, so the total range increases. Strafing backwards while firing forwards will add negative velocity to inherent movement, and this will result in a particle's initial forward velocity being slower. As inherent forward velocity decreases, inherited velocity begins to catch up and exceed it; the particle will come to a complete stop before accelerating in the opposite direction. This is helpful for the Pyro to counter its chasers.

Flame Launcher

The item kind Flame Launcher only includes the Dragon's Fury. Although being a new weapon type in the Pyro's arsenal, the fireball It launches is more similar to the normal projectiles. The Dragon's Fury can launch a quick, short-range (526 HU) fireball that travels 3000HU/s. Its momentum will not be influenced by the movement of the player, but it can still penetrate players and buildings just like the normal flames particles. Each fireball inflicts around the same damage as a Flare Gun shot, and causes enemies to suffer Afterburn for a short time, even enemy Pyros (albeit for a slightly shorter time than for other classes). Hitting an enemy that is already on fire deals triple damage, so long as the middle of the "fireball" connects.

Afterburn

A Heavy on fire.

Upon being set aflame, a player's character will automatically scream out that they are on fire, alerting nearby Medics and teammates to their plight. Setting an opponent on fire also creates a disorienting effect on their screen view (flames will engulf the edges of the screen and a burning sound is heard). This can be used to a team's advantage if the Pyro is able to ambush a group of attacking foes. Snipers lit on fire will find it extremely difficult to aim, as the scoped view will move every time the Sniper takes damage from the burning (an effect the Sniper can prevent while fully-charged by equipping the Cozy Camper). When calling for a Medic, the balloon with the Medic symbol will be on fire, notifying a Medic that his teammate is being damaged by afterburn. This helps prioritise burning players as an urgent healing target.

Afterburn can be used to Spy check. A small burst of flame will ignite an enemy Spy, even if cloaked or disguised. Burning players give off an additional coloured particle effect revealing their true allegiance; this is a useful effect for distinguishing disguised Spies from teammates.

Afterburn from certain sources can be used to disrupt healing from the various mediguns and shield resistance from the Vaccinator. Afterburn from these sources reduces Vaccinator resist shields by 20%; healing from mediguns, Medicating Melody, or level 3 dispensers by 50%; and healing from level 1 or 2 dispensers (including Payload carts and such) by 100%. Most of these effects remove afterburn after only a second, though, so this isn't always noticeable.

The fire effect starts immediately upon damage from a weapon that causes it. Afterburn damages a player every half-second for 4 HP each tick (1 HP each tick for the Degreaser), totaling 80 damage over those ten seconds (20 damage for the Degreaser). Each fire effect from a flamethrower can last up to 10 seconds, afterburn duration will ramp up from 3 to 10 seconds based on how long the target was in direct contact with the flame. Flare guns, burning arrows, and the Huo-Long Heater's ring of fire apply 7.5 seconds of afterburn, while the afterburn from the Cow Mangler 5000's charged shot lasts 6 seconds. Additional hits from these weapons will restart the duration of the afterburn.

Afterburn damage cannot crit; however, it can mini-crit if the target is under a mini-crit debuff, such as being covered in Jarate, marked for death, or if the attacking player is buffed by the Buff Banner.

While afterburn duration may stack from multiple sources and players, the damage does not; only the most recent weapon to cause afterburn (and its owner) is considered to be the cause of the burning. This can change how much damage is dealt if the Degreaser (with its reduced afterburn damage) is involved.

Note that enemy Pyros cannot be set on fire (as Pyros are normally immune to afterburn), except by the Dragon's Fury and the Gas Passer. While Pyros still take contact damage from direct flame attacks, they will not take further damage over time. The Pyro does, however, count as on fire for a brief second while he appears with the charred graphical effect after taking damage from a fire-inducing weapon, and while the Pyro takes no additional damage, the Pyro can still suffer critical hits from the Sun-on-a-Stick and Flare Gun, and mini-crits from the Detonator, Scorch Shot, Axtinguisher, and Postal Pummeler. A Spy disguised as a Pyro from either team, however, will still be lit on fire and take afterburn damage.

It is possible to allow gibs to catch fire (if a player is gibbed while on fire) with the cl_burninggibs command set to 1.

Damage and function times

See also: Damage
Damage and function times
Damage type Fire
Ranged or Melee damage? Any
Damage
Afterburn 4 / tick
80 total
Afterburn (mini-crit) 5 / tick
100 total
Function times
Attack interval 0.5 s
Afterburn duration 3-10 s
Values are approximate and determined by community testing.

Weapons which inflict afterburn

List of afterburn-inflicting weapons
Primary Cow Mangler 5000
  • Alt-fire: Fires a Mini-crit shot which ignites enemies who get hit. It will also ignite the player if they are in range.
Cow Mangler 5000
Primary Flame Thrower Rainblower
Flame Thrower Rainblower
Nostromo Napalmer
Nostromo Napalmer
Backburner
Backburner
Degreaser
  • Afterburn caused by this weapon deals 75% less damage compared to the default Flamethrower.
Degreaser
Phlogistinator
  • Fire damage builds Mmmph.
Phlogistinator
Dragon's Fury
  • Fires short range projectiles instead of normal flames.
Dragon's Fury
Secondary Flare Gun
  • Deals Critical hits damage to any already burning players.
Flare Gun
Detonator
  • Alt-fire: Detonate flare. Will ignite enemies within a certain radius. Ignites the player who fired it at the ground or detonated too close.
  • Deals Mini-crit damage to any already burning players if they are hit by the flare impact or flare explosion radius.
Detonator
Manmelter
Manmelter
Scorch Shot
  • Shoots a flare that bounces off enemies as well as allies and explodes, igniting all enemies caught in the explosion.
  • Deals Mini-crit damage to any already burning players if they are hit by the flare impact or flare explosion radius.
Scorch Shot
Gas Passer
  • Doused enemies will ignite when attacked, applying an afterburn effect for 10 seconds. Includes other Pyros, which are normally immune to the effects of afterburn.
Gas Passer
Melee Sharpened Volcano Fragment
Sharpened Volcano Fragment
Primary Huo-Long Heater
  • Surrounds the Heavy with a ring of fire when deployed, igniting anyone who comes in contact with it.
Huo-Long Heater
Primary Huntsman Fortified Compound
  • Arrows can be ignited by an allied Pyro firing their primary weapon as well as approaching the torches placed in DeGroot Keep.
Huntsman Fortified Compound
Notes
  • Afterburn will be sparkling particle effects for players that are in Pyroland.


Surviving fire

The following will extinguish a player who is on fire:

The following methods do not extinguish the afterburn, but can help burning players survive by healing faster than the afterburn can deal damage or by mitigating afterburn's damage:

  • Being healed by a Medic, a Dispenser, or the Payload cart for less than a full second.
  • Drinking Bonk! Atomic Punch will stop any afterburn damage, although it may resume after the effects of Bonk! have worn off. Additionally, the damage taken from the fire damage will cause a slow effect.
  • Any form of weapon-based healing aside from the Conniver's Kunai, such as the Eyelander or Black Box.
  • Equipping weapons that increase the player's maximum health, such as the Bootlegger or Battalion's Backup.
  • Being buffed by the Battalion's Backup.
  • Damage resistance provided by the Chargin' Targe, Splendid Screen, and Tide Turner.
  • The Soldier's passive health regeneration while equipped with the Concheror.
  • The Sniper's passive health regeneration while equipped with the Cozy Camper.
  • The Medic's passive health regeneration.
  • The Medic's Oktoberfest taunt.
  • Holding the Amputator out as Medic.
  • The Spy's 20% damage resistance when cloaking.
  • The Dead Ringer's 75% damage resistance upon being struck by fire.
  • The Dead Ringer's cloak damage resistance, which fades from 65% to 20% in 3 seconds.

Related weapons

The following weapons provide additional resistance or vulnerability against fire-based attacks. Note that both contact damage (barring the melee damage from the Sharpened Volcano Fragment) and afterburn damage is modified.

List of weapons modifying fire damage
Melee Sun-on-a-Stick Pictogram info.png  +25% fire damage resistance while deployed.
Sun-on-a-Stick
Secondary Battalion's Backup Pictogram info.png  When used, it provides a defensive buff to nearby teammates that blocks 35% of incoming damage.
Battalion's Backup
Melee Powerjack Pictogram minus.png  20% damage vulnerability from all sources on wearer when active.
Powerjack
Secondary Chargin' Targe Pictogram plus.png  50% fire damage resistance on wearer.
Pictogram plus.png  Charging will extinguish user.
Chargin' Targe
Splendid Screen Pictogram plus.png  20% fire damage resistance on wearer.
Pictogram plus.png  Charging will extinguish user.
Splendid Screen
Tide Turner Pictogram plus.png  15% fire damage resistance on wearer.
Pictogram plus.png  Charging will extinguish user.
Tide Turner
Melee Claidheamh Mòr Pictogram minus.png  15% damage vulnerability from all sources on wearer when active.
Claidheamh Mòr
Primary Natascha Pictogram plus.png  20% damage resistance when below 50% health and spun up.
Natascha
Brass Beast Pictogram plus.png  20% damage resistance when below 50% health and spun up.
Brass Beast
Secondary Buffalo Steak Sandvich Pictogram minus.png  While under the effects, damage taken will be increased 25%.
Buffalo Steak Sandvich
Melee Fists of Steel Pictogram plus.png  40% damage resistance from range sources on wearer when active.
Fists of Steel
Warrior's Spirit Pictogram minus.png  30% damage vulnerability from all sources on wearer when active.
Warrior's Spirit
Melee Southern Hospitality Pictogram minus.png  20% fire damage vulnerability on wearer.
Southern Hospitality
Secondary Vaccinator Pictogram info.png  While healing, provides healer and heal target with constant 10% resistance to the selected damage type.
Pictogram info.png  Übercharge provides 75% resistance and full crit resistance to a selected damage type.
Vaccinator
Secondary Darwin's Danger Shield Pictogram plus.png  50% fire damage resistance on wearer.
Pictogram plus.png  Immunity to afterburn
Darwin's Danger Shield
Melee Bushwacka Pictogram minus.png  20% damage vulnerability from all sources on wearer when active.
Bushwacka
Melee Spy-cicle Pictogram plus.png  On Hit by Fire: Become fireproof for 1 second and Afterburn immunity for 10 seconds.
Pictogram info.png  Can be used to extinguished fire.
Spy-cicle
PDA 2 Invis Watch Enthusiast's Timepiece Pictogram info.png  20% damage resistance when cloaking.
Pictogram info.png  Reduce fire duration when cloaking.
Invis Watch Enthusiast's Timepiece
Quäckenbirdt
Quäckenbirdt
Cloak and Dagger Pictogram info.png  20% damage resistance when cloaking.
Pictogram info.png  Reduce fire duration when cloaking.
Cloak and Dagger
Dead Ringer Pictogram info.png  When struck by fire, blocks 75% of incoming damage.
Pictogram info.png  After Dead Ringer activated, 65% damage resistance on wearer which fades to 20% in 3 seconds.
Pictogram info.png  Can be used to extinguished fire.
Pictogram info.png  When activated, gives 3 seconds of Afterburn immunity.
Dead Ringer


Related achievements

Achieved.png General

Escape the Heat
Escape the Heat
Jump into a pool of refreshing water while on fire.


Flamethrower
Flamethrower
Set five enemies on fire in 30 seconds.


Leaderboard class soldier.png Soldier

Semper Fry
Semper Fry
Kill 20 enemies while you are on fire.


Leaderboard class pyro.png Pyro

Attention Getter
Attention Getter
Ignite 100 enemies with the flare gun.


Burn Ward
Burn Ward
Ignite 3 Medics that are ready to deploy an ÜberCharge.


Controlled Burn
Controlled Burn
Ignite 50 enemies capturing one of your control points.


Firewall
Firewall
Ignite 5 Spies who have a sapper on a friendly building.


Got A Light?
Got A Light?
Ignite an enemy Spy while he's flicking a cigarette.


Next of Kindling
Next of Kindling
Ignite an enemy, and the Medic healing him.


Pyromancer
Pyromancer
Do 1 million points of total fire damage.


Spontaneous Combustion
Spontaneous Combustion
Ignite 10 cloaked Spies.


Weenie Roast
Weenie Roast
Have 2 enemy Scouts on fire at the same time.
Baptism by Fire
Baptism by Fire
Force 10 burning enemies to jump into water.


Combined Fire
Combined Fire
Use your shotgun to finish off 20 players you've ignited.


Cooking the Books
Cooking the Books
Ignite 5 enemies carrying your intelligence.


Firewatch
Firewatch
Ignite 10 Snipers while they are zoomed in.


I Fry
I Fry
Ignite 10 disguised Spies.


Makin' Bacon
Makin' Bacon
Kill 50 Heavies with your flamethrower.


Pilot Light
Pilot Light
Ignite a rocket-jumping Soldier while he's in midair.


Second Degree Burn
Second Degree Burn
Kill a burning enemy who was ignited by another Pyro.


Trailblazer
Trailblazer
Ignite 10 enemies that have recently used a teleporter.

Leaderboard class heavy.png Heavy

Rasputin
Rasputin
In a single life, get shot, burned, bludgeoned, and receive explosive damage.


Leaderboard class engineer.png Engineer

The Extinguished Gentleman
The Extinguished Gentleman
Have dispensers you built extinguish 20 burning players.


Leaderboard class medic.png Medic

Autoclave
Autoclave
Assist in burning 5 enemies with a single ÜberCharge on a Pyro.


Infernal Medicine
Infernal Medicine
Extinguish 100 burning teammates.


Leaderboard class sniper.png Sniper

Friendship is Golden
Friendship is Golden
Extinguish a burning teammate with your Jarate.


Leaderboard class spy.png Spy

Burn Notice
Burn Notice
Survive 30 seconds after being ignited while cloaked.


Kill icons

Unused kill icons

Update history

October 9, 2012 Patch

  • Overhealed players that are bleeding or on fire can now pickup healthkits to remove these conditions.

October 20, 2017 Patch

  • Afterburn
    • Flamethrowers no longer apply maximum-duration afterburn on contact. Afterburn duration is now based on how long the target is in contact with direct flames -- starting at a minimum of 3 seconds, and stacking to a maximum of 10 seconds.
    • Per-tick afterburn damage increased to 4 (from 3), for a total of 8 damage per-second (up from 6 per-second)
    • Flareguns now apply 7.5 seconds of afterburn (down from 10 seconds), resulting in the same total damage as before
    • Afterburn now reduces all direct Medic healing and resist shields by 20%
      • Note: This effect was previously applied by direct flames from all flamethrowers (at 25%), but was moved to afterburn, and slightly lowered

October 24, 2017 Patch

Unused content

  • All classes (except for the Pyro) have an unused death animation when on fire.

Bugs

  • A burning player will cease to take damage if the enemy who inflicted the afterburn changes teams, but will visually remain on fire for the default duration.
  • Being set on fire and then switching to another team will cause the HUD to have the afterburn fire effect until the player disconnects. However, the player will not say fire-related responses or receive damage.
  • Occasionally the afterburn effect will continue to stay on a player that's recently been burnt, but survived.
  • Afterburn from the Dragon's Fury does not reduce direct Medic healing and resist shields by 20%.
  • Flames can shoot over long distances if the Pyro uses the Detonator or Scorch Shot to build up speed and is stuck in a map surface/object.[1]

Notes

  • Burning ragdolls will not be extinguished when submerged in water.

References